170 lines
4.1 KiB
C
170 lines
4.1 KiB
C
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/*!
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************************************************************************
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* \file quant.h
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*
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* \brief
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* definitions for quantization functions
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*
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* \author
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*
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************************************************************************
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*/
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#ifndef _QUANT_H_
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#define _QUANT_H_
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// exported variables
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static const int dequant_coef8[6][64] =
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{
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{
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20, 19, 25, 19, 20, 19, 25, 19,
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19, 18, 24, 18, 19, 18, 24, 18,
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25, 24, 32, 24, 25, 24, 32, 24,
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19, 18, 24, 18, 19, 18, 24, 18,
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20, 19, 25, 19, 20, 19, 25, 19,
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19, 18, 24, 18, 19, 18, 24, 18,
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25, 24, 32, 24, 25, 24, 32, 24,
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19, 18, 24, 18, 19, 18, 24, 18
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},
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{
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22, 21, 28, 21, 22, 21, 28, 21,
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21, 19, 26, 19, 21, 19, 26, 19,
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28, 26, 35, 26, 28, 26, 35, 26,
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21, 19, 26, 19, 21, 19, 26, 19,
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22, 21, 28, 21, 22, 21, 28, 21,
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21, 19, 26, 19, 21, 19, 26, 19,
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28, 26, 35, 26, 28, 26, 35, 26,
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21, 19, 26, 19, 21, 19, 26, 19
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},
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{
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26, 24, 33, 24, 26, 24, 33, 24,
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24, 23, 31, 23, 24, 23, 31, 23,
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33, 31, 42, 31, 33, 31, 42, 31,
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24, 23, 31, 23, 24, 23, 31, 23,
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26, 24, 33, 24, 26, 24, 33, 24,
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24, 23, 31, 23, 24, 23, 31, 23,
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33, 31, 42, 31, 33, 31, 42, 31,
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24, 23, 31, 23, 24, 23, 31, 23
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},
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{
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28, 26, 35, 26, 28, 26, 35, 26,
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26, 25, 33, 25, 26, 25, 33, 25,
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35, 33, 45, 33, 35, 33, 45, 33,
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26, 25, 33, 25, 26, 25, 33, 25,
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28, 26, 35, 26, 28, 26, 35, 26,
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26, 25, 33, 25, 26, 25, 33, 25,
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35, 33, 45, 33, 35, 33, 45, 33,
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26, 25, 33, 25, 26, 25, 33, 25
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},
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{
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32, 30, 40, 30, 32, 30, 40, 30,
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30, 28, 38, 28, 30, 28, 38, 28,
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40, 38, 51, 38, 40, 38, 51, 38,
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30, 28, 38, 28, 30, 28, 38, 28,
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32, 30, 40, 30, 32, 30, 40, 30,
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30, 28, 38, 28, 30, 28, 38, 28,
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40, 38, 51, 38, 40, 38, 51, 38,
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30, 28, 38, 28, 30, 28, 38, 28
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},
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{
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36, 34, 46, 34, 36, 34, 46, 34,
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34, 32, 43, 32, 34, 32, 43, 32,
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46, 43, 58, 43, 46, 43, 58, 43,
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34, 32, 43, 32, 34, 32, 43, 32,
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36, 34, 46, 34, 36, 34, 46, 34,
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34, 32, 43, 32, 34, 32, 43, 32,
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46, 43, 58, 43, 46, 43, 58, 43,
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34, 32, 43, 32, 34, 32, 43, 32
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}
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};
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//! Dequantization coefficients
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static const int dequant_coef[6][4][4] = {
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{
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{ 10, 13, 10, 13},
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{ 13, 16, 13, 16},
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{ 10, 13, 10, 13},
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{ 13, 16, 13, 16}},
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{
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{ 11, 14, 11, 14},
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{ 14, 18, 14, 18},
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{ 11, 14, 11, 14},
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{ 14, 18, 14, 18}},
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{
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{ 13, 16, 13, 16},
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{ 16, 20, 16, 20},
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{ 13, 16, 13, 16},
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{ 16, 20, 16, 20}},
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{
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{ 14, 18, 14, 18},
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{ 18, 23, 18, 23},
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{ 14, 18, 14, 18},
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{ 18, 23, 18, 23}},
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{
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{ 16, 20, 16, 20},
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{ 20, 25, 20, 25},
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{ 16, 20, 16, 20},
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{ 20, 25, 20, 25}},
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{
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{ 18, 23, 18, 23},
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{ 23, 29, 23, 29},
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{ 18, 23, 18, 23},
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{ 23, 29, 23, 29}}
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};
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static const int quant_coef[6][4][4] = {
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{
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{ 13107, 8066, 13107, 8066},
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{ 8066, 5243, 8066, 5243},
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{ 13107, 8066, 13107, 8066},
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{ 8066, 5243, 8066, 5243}},
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{
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{ 11916, 7490, 11916, 7490},
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{ 7490, 4660, 7490, 4660},
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{ 11916, 7490, 11916, 7490},
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{ 7490, 4660, 7490, 4660}},
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{
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{ 10082, 6554, 10082, 6554},
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{ 6554, 4194, 6554, 4194},
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{ 10082, 6554, 10082, 6554},
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{ 6554, 4194, 6554, 4194}},
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{
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{ 9362, 5825, 9362, 5825},
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{ 5825, 3647, 5825, 3647},
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{ 9362, 5825, 9362, 5825},
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{ 5825, 3647, 5825, 3647}},
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{
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{ 8192, 5243, 8192, 5243},
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{ 5243, 3355, 5243, 3355},
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{ 8192, 5243, 8192, 5243},
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{ 5243, 3355, 5243, 3355}},
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{
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{ 7282, 4559, 7282, 4559},
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{ 4559, 2893, 4559, 2893},
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{ 7282, 4559, 7282, 4559},
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{ 4559, 2893, 4559, 2893}}
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};
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// SP decoding parameter (EQ. 8-425)
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static const int A[4][4] = {
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{ 16, 20, 16, 20},
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{ 20, 25, 20, 25},
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{ 16, 20, 16, 20},
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{ 20, 25, 20, 25}
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};
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// exported functions
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// quantization initialization
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extern void init_qp_process (VideoParameters *p_Vid);
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extern void free_qp_matrices(VideoParameters *p_Vid);
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// For Q-matrix
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extern void assign_quant_params (Slice *currslice);
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extern void CalculateQuant4x4Param(Slice *currslice);
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#endif
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